Improvement in machines for brushing boot and shoe soles



N. B. BRIGGS & C. F. STETSON.

Improvement in'Machines for Brushing Boot and Shoe Sbles Patented Oct.22,1872.

UNITED STATES PATENT OFFICE.

NATHANIEL B. BRIGGS, OF EAST ABINGTON, AND CHARLES T. STETSON,

' OF WEST HANOVER, MASSACHUSETTS.

IMPROVEMENT IN MACHINES FOR BRUSHING BOOT AND SHOE SOLES.

Specification forming part of Letters Patent No. 132,435, dated October22, 1872.

To all whom it may concern:

Beit known thatwe,NArHANn1LB.BRIees, of East Abington, and CHARLES T.SrErsoN, of .West Hanover, all in the county of Plymouth and State ofMassachusetts, have invented jointly an Improved Machine for BrushingStained Boot and Shoe Bottoms; and we do hereby declare that thefollowing, taken in connection with the drawing which accompanies andforms part of this specification, is a description of our inventionsufficient to enable those skilled in the art to practice it.

In finishing the soles or bottoms of boots and shoes it is customary,after sand-papering the sole to produce a uniform surface, to brush thesole for the purpose of producing a finished surface. As the motion ofthe brush has to be irregular or somewhat elliptical, the sole beingoblong, the brush has always been actuated by hand, rendering theoperation lengthy and laborious. The object of our invention is tofacilitate the operation of brushing such boot and shoe soles, toaccomplish which we make an upright stand or frame, with a horizontaldriving-shaft, having at one end a crank-wheel, to the crank-pin ofwhich is jointed a long arm or bar that carries at its upper end anoblong and vertical brush, which brush has projecting from its back, andnear its lower end, a stud that extends into and slides in a verticalslot made in an upward extension of the frame, the bristles of the brushstanding out horizontally, so that their front ends form the brushingsurface. The motion of the shaft and crank impart a vertical andelliptical movement to the brush, so that if a boot or shoe sole issimply presented to it its surface may be very quickly and perfectlyfinished.

The drawing represents a machine embodying the invention.

a denotes the frame; b, a bearing, in which is journaled the horizontalshaft a, carrying at one end a driving-pulley, d, and at the other end awheel, 6, from which extends a crankpin, f. To this pin is jointed a rodor bar, 9, that carries'at its upper end the oblong vertical brush h,the bristles of which stand as seen in the drawing. From the back of thebrush projects the slide-stud i, which extends through a guide-slot, k,in an upright extension, l, of the frame a.

It will readily be seen that as the shaft is rotated there will beimparted to the brush the peculiar oblong and elliptical motion whichwould be imparted by hand, and in brushing boot and shoe bottoms thehand-work of three men can be accomplished by one, and the work will beas well or even better accomplished.

The bar g may be jointed to the crank-wheel by a slotted connection forthe purpose of adjustment of vertical throw of the brush, and the barand slide-stud may be connected in a similar manner to adjust thelateral movement of the brush.

We claim- The brush h, slide-stud t, guide-slot k, bar 9, andcrank-wheel 6, combined and arranged to operate substantially as shownand described.

NATHANIEL B. BRIGGS. CHARLES T. STETSON.

Witnesses to BRIGGS and STETSON:

J Aims JENKINS, FRANCIS GOULD.

